package com.hsh;

import java.io.IOException;
import java.util.StringTokenizer;

import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.Reducer;

public class WordCount {

	public static class TokenizerMapper1 
	extends Mapper<Object, Text, Text, IntWritable>{

		private final static IntWritable one = new IntWritable(1);
		private Text word = new Text();

		public void map(Object key, Text value, Context context
				) throws IOException, InterruptedException {
			StringTokenizer itr = new StringTokenizer(value.toString());
			while (itr.hasMoreTokens()) {
				word.set(itr.nextToken());
				//System.out.println("map--" + word);
				context.write(word, one);
			}
		}
	}

	public static class IntSumReducer 
	extends Reducer<Text,IntWritable,Text,IntWritable> {
		private IntWritable result = new IntWritable();

		public void reduce(Text key, Iterable<IntWritable> values, 
				Context context
				) throws IOException, InterruptedException {
			int sum = 0;
			for (IntWritable val : values) {
				sum += val.get();
			}
			//System.out.println("reduce--" + sum);
			result.set(sum);
			context.write(key, result);
		}
	}
}
